Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: tmx on 09 May 2008, 21:53:26

Title: 3.0 EGR Valve
Post by: tmx on 09 May 2008, 21:53:26
well my egr valve is cracked i dont want to blank it off as the engine wont run properly with it blanked off runs the engine runs abit Lean

is the 3.0s egr valve the same as a 2.5 vectra / 2.5 mig? as the local scrappies dont have any 3.0 v6s
Title: Re: 3.0 EGR Valve
Post by: Mike Collins on 09 May 2008, 23:13:18
My 2.5 runs normally, if not better, with the EGR blanked off, I think many people have done this.

Is there a reason you think it runs lean?
Title: Re: 3.0 EGR Valve
Post by: tmx on 09 May 2008, 23:16:37
blanked it off for a few months and changed spark plugs took a plug out a few days ago and the plug was showing signs of a lean engine and i put the egr back through and changed fuel filter and its not running lean anymore
Title: Re: 3.0 EGR Valve
Post by: Kevin Wood on 09 May 2008, 23:44:08
The mixture should be kept correct by the Lambda loop regardless of the EGR. Bear in mind that unleaded fuel doesn't colour the plugs much at all so I wouldn't regard them as a reliable indicator of mixture.

EGR probably causes a cooler burn under some conditions which might account for the difference in plug colour. I doubt you'll have any trouble if you blank it off.

Kevin
Title: Re: 3.0 EGR Valve
Post by: tmx on 09 May 2008, 23:46:29
cheers kevin ill get my plate back on there then!

just seen the okugs were overheated so thought id put it back through

thanks again!
Title: Re: 3.0 EGR Valve
Post by: Kevin Wood on 10 May 2008, 00:30:29
Might be worth keeping an eye out for a replacement EGR valve because in theory it will improve economy slightly but I'd not worry too much about blanking it in the interim.

Kevin
Title: Re: 3.0 EGR Valve
Post by: hotel21 on 10 May 2008, 11:32:13
I would double check the angle of the elctrical connection on the top of the EGR before swapping a Vectra one for an Omega.  I aquired a new spare ages ago and when attempting to fit to a friends car, discovered that the wiring was not long enough from the loom to reach.  Compared it with a Vectra and they are different...
Title: Re: 3.0 EGR Valve
Post by: tmx on 11 May 2008, 13:33:47
H21 your right just tried me vectras and its at a 180 degree offset to the migs wiring woul fit but is very stretched so i dont wanna have it like that!! m8 is breaking a 2.5 mig engine so i shall be paying him a visit on tues for some treasure!